From publisher blurb:
An adventure shard for a party of level 7 to 9 heroes who oppose the undead.
The Lord of the Forge, a great Dwarven King, holds a dark artifact of great value - one of the phylacteries that keeps the Archlich known as "The Deathless One" alive.
But that phylactery is also the treaty that keeps undead hordes from assaulting the dwarven mines, so The Lord of the Forge is unlikely to give it up willingly.
This Adventure Shard details how an adventuring party might get hold of the Hostage Treaty, with both combat and skill-based Extended Challenges whether they use trickery or simply break into his vault.
The Extended Challenge rules-set is included alongside the Adventure Shard allowing you to make use of a new subsystem for deeper non-combat challenges.